I can regrind lifters accurately in my shade tree back yard shop. So can any machinist who is willing to fabricate a very simple fixture to put the proper radius on the bottom where the lifter base contacts the cam lobe. Most of them just aren't willing to try.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!